Barack Obama's first term: the US President's first four years in pictures

May 23, 2011: "This was one of the great trips of the year, albeit brief, when we visited Ireland in May. This rope line in Moneygall was particularly fun as people reacted so jubilantly to the President and First Lady. It was somewhat unusual, though, in that the sun kept coming in and out, and at times it was even pouring rain."Picture: Official White House photo by Pete Souza